Description

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If your suspension or steering assemblies suffer from rotational slippage or structural play under intense vibrations, our high-performance Ball Stud with Knurled Shoulder is the definitive engineering answer. This specialized Ball Stud with Knurled Shoulder features a strategically positioned ring of raised, textured knurling directly beneath the spherical head shoulder. When press-fitted into steel or aluminum suspension control arms, these knurls bite deeply into the housing wall, creating an incredibly tight mechanical lock that prevents rotational slipping, even when subjected to continuous off-road impacts and extreme torque forces.

We manufacture the Ball Stud with Knurled Shoulder using state-of-the-art cold-forging and specialized thread/knurl rolling machinery in our modern 10,000 square meter factory. With a dedicated workforce of 200+ production experts, we maintain strict adherence to IATF 16949 guidelines, ensuring that the knurl pitch, height, and hardness are perfectly calibrated. This prevents the knurls from shearing during press-fitting. This robust mechanical design has allowed us to serve as a reliable OEM partner for suspension brand owners in North America, Europe, and Australia, delivering parts that elevate vehicle handling and structural safety.

Technical Specifications

Knurl Pattern	Straight (axial), helical, or diamond knurling patterns available
Knurl Diameter	Oversized relative to the shank for secure interference lock
Material	40Cr chromium steel or specialized high-tensile carbon steel
Hardness Profile	Core heat-treated to 28-35 HRC; Knurled surface hardened for cutting force
Surface Treatment	Zinc-Nickel alloy, Geomet, or black oxide rust prevention

Application Areas

Steering Knuckles

Provides an anti-rotational lock in aluminum or cast iron knuckle assemblies.

Chassis Crossmembers

Securely anchors stabilizer bar linkages to the front underbody crossbeam.

Suspension Control Arms

Used as a press-fit joint in heavy-duty upper and lower control arms.

Customization Capabilities

We possess rich ODM capabilities backed by an experienced team of 20+ R&D professionals. If your suspension housing is made of a soft alloy or requires a customized diamond knurl pitch to optimize press-in force, we will work with you to engineer the perfect knurl profile. We can run finite element analysis (FEA) on your designs and deliver high-precision samples in 7 to 15 working days.

Packaging & Shipping

Inner Protection

Anti-rust oil coating, wrapped in protective bubble sleeves, and boxed in small batches to preserve knurl tooth integrity.

Outer Packing

Packed in extra-strength five-layer corrugated cartons, strapped with polypropylene bands, and stacked on heavy-duty plastic or wooden pallets.

Delivery Terms

Fully compliant with EXW, FOB, CIF, and door-to-door DDP (inclusive of import clearance).

FAQ

Q1: Can this knurled shoulder design be used in lightweight aluminum suspension components?

A: Yes. We can specifically calibrate the hardness and geometry of the Ball Stud with Knurled Shoulder so it forms a secure lock in aluminum housings without cracking the surrounding casting.

Q2: What is your minimum order quantity (MOQ) for custom knurled items?

A: Our standard MOQ is 10,000 pieces per model. However, for specialized custom projects or initial market trials, we can adjust the MOQ based on tooling requirements and material availability.

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